National Council for the Social Studies. (2013). The college, career, and civic life (C3) framework for social studies state standards: Guidance for enhancing the rigor of K-12 civics, economics, geography, and history. Silver Spring, MD: National Council for the Social Studies. Available online http://www.socialstudies.org/c3

I meant to bring up this book during the podcast as it deals with getting students to ask their own questions. I found that the C3 website also recommends it. So, you should read it! Rothstein, D., & Santana, L. (2011). Make just one change: Teach students to ask their own question Cambridge, MA: Harvard Education Press.